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CCS811 Air Quality Sensor

Measure equivalent CO2 (eCO2) and the equivalent total volatile organic compound concentration (eTVOC)

  • Library:
  • Simulink Support Package for Raspberry Pi Hardware / Sensors / Environmental Sensors

  • CCS811 Sensor

Description

The CCS811 Air Quality Sensor block measures the equivalent CO2 (eCO2) and the equivalent total volatile organic compound concentration (eTVOC) for indoor air quality monitoring. This block also provides the option to provide temperature and humidity data to enable compensation (either by specifying the humidity and temperature values or by interfacing CCS811 with an external sensor).

Ports

Output

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The eCO2 port outputs the value for equivalent CO2 of indoor air in parts per million (ppm).

Data Types: single | double

The eTVOC port outputs the equivalent total volatile organic compound concentration of indoor air in parts per billion (ppb).

Data Types: single | double

Status of the values 0 indicates that the data read for eCO2 and eTVOC is new and 1 indicates that the data read is not new.

Data Types: uint8

Parameters

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Specify the module on the board that you are using for I2C communication.

The I2C address of the CCS811 sensor from which the block reads the values.

The I2C address of the CCS811 sensor from which the block reads the values. The CCS811 sensor can have two I2C addresses depending on the logic level on pin ADDR of the sensor.

Pin NamePin StateI2C Address
ADDRLow0x5A
High0x5B

Select the data acquisition interval in seconds for the sensor to read data. For example, if you select value 1, then the sensor reads values every 1 second.

Select the option to specify the source of environmental inputs for the sensor while reading data.

Humidity in percentage provided as an input to CCS811 sensor connected to Raspberry Pi™board.

Dependencies

This parameter appears only if you select Mask dialog for Specify environmental conditions parameter.

Temperature (in ℃) provided as an input to CCS811 sensor connected to Raspberry Piboard.

Dependencies

This parameter appears only if you select Mask dialog for Specify environmental conditions parameter.

If this option is selected, an interrupt is generated on pin nINT of the sensor when data is ready, allowing you to trigger other subsystems to perform any action.

Select the data type for output.

Specify how often this block reads the data from the CCS811 sensor. When you set this parameter to -1, Simulink determines the best sample time for the block based on the block context within the model.

Version History

Introduced in R2022b